Conveyer belt



June 24, 1930. F N WQODMAN 1,766737 Filed July 27. 1928 zo 257% )aj/7'? ZO ?/vcaf 12500/227027 WWI a@ like fabric.

Patented June 24,/ 1930 v UNITED STATES PATNT Fries FRANCIS LN. WOODMAN, OF CLINTON, MASSACHUSETTS, ASSIGNOR T WICKWIRE SPENCER STEEL COMPANY, 0F NEW YORK, N'. Y., A.- CORPQRATION 0F DELAWARE CONVEYER BELT 'Application led July 27,

This invention relates to a spiral Wire conveyer belt such as is used in many industries for moving material from place to place or for supporting material during drye ing or other operations.

lt is one object of my invention to provide a wire belt having means to prevent lateral displacement of materials supported y thereon.

lt is a further object of the invention to provide av belt with strongly reinforced selvageedges by which the duration of the belt is much increased and by which all laterally projecting ends of wire are avoided.

l My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention .is

2@ shown in the drawings in which Fig. l is a plan `view of a portion of a belt embodying my improvements;

Fig. 2 is a sectional transverse elevation thereof, and v Fig. 3 is a diagrammatic end elevation showing a further use of my invention.

Referring to the drawings, l have shown a portion of a conveyer belt formed of spiral wires l0 interlaced to form a mesh- Reinforcing wires 12 are inserted between certain ef the coils to hold the belt flat and to prevent lateral shrinkage of the belt under tension.

'lhe ends 14 of the wire coils l0 are preferably twisted together, as indicated in Fig. 2, preventing displacement of the coils and causing the-ends to be turned in so that theycannot cause injury to clothing or operator.

The coils l0 adjacent the rods 12 are preferably so twisted together at their ends that the twisted ends form an abutment, preventing longitudinal displacement of,A the rods 1 2.

After the belt is thus constructed and assembled, l turn and compress the edges of the belt to form a reverse fold alon each longitudinal edge of the belt, as in icate'd in Fig. 2. These reverse folds thus provide selvages for the belt which are of double 5@ thickness, and thlus greatly increases the ieee. serial in. 295,808.

Wearing quality of the belt along the edge portions where the wear is -lnost severe.

The reverse fold of the selvage is preferably disposed entirely at one side or surface of the belt, thus forming a substantially raised rib or flange along each outer edge of the belt, which effectively prevents lateral iplacement of material transported on the lt is also possible to run the belt reversed as'indicated in Fig. 3, utilizing the edge folds as guides, cooperating with recessed pulleys or drums 20 and thus causing the belt to travel in a fixed and definite path.

Having thus described my invention and the advantages thereof, l do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, lbut what l claim is y1. A conveyer belt formed of interlaced spiral wires extending transversely of said belt, the ends of adjacent wires being twisted together in pairs at the selvages and the selvages being folded lengthwise of the belt to form edge portions of double thickness, the extra thickness lbeing disposed entirely at one side of the belt and constituting retaining means vfor material transported on said belt.

2. A conveyer belt formed of interlaced spiral wires extending transversely of said belt and reinforcing rods interposed between selected pairs of wires, the end portions of said spiral Wires and said reinforcing rods being reversely bent to form thickened selvages. for said belt.

In testimony whereof l have hereunto aixed my si nature.

' RANCIS N. WDMAN. 

